* [9fans] sshnet and the go dns resolver
@ 2021-02-23 21:34 Steve Simon
2021-02-23 22:23 ` Fazlul Shahriar
2021-02-23 23:23 ` Jeff Sickel
0 siblings, 2 replies; 4+ messages in thread
From: Steve Simon @ 2021-02-23 21:34 UTC (permalink / raw)
To: 9fans
hi,
the senerio - i have a plan9 terminal, a mac laptop. the laptop connects to a vpn.
i write in go, and thus far i use sshfs to mount the mac’s filesystem and edit my code. i build and run the code on the mac.
i thought i could use git9 via sshnet to work natively on plan9
most of this is fine but when go tries to access mod files for packages on the vpn i get a “no sutiable address found” error for proxy.golang.org.
i can resce the address i need (over the vpn) using ndb/dnsquery however.
if i try and build without my sshnet vpn connection then i get a different error which refers to a repository on the vpn.
so. i think the native resolver in the go libraries (and thus in the go executable) do not play nicely with sshnet.
my guess (only a guess) is go is trying to do its own name resolution using udp port 53 and sshnet does not support udp.
anyone any ideas?
can i convince go to use plan9’s own name resolution?
can ssh (and thus sshnet) forward udp or is that not possible?
thanks for any ideas
-Steve
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] sshnet and the go dns resolver
2021-02-23 21:34 [9fans] sshnet and the go dns resolver Steve Simon
@ 2021-02-23 22:23 ` Fazlul Shahriar
2021-02-23 23:23 ` Jeff Sickel
1 sibling, 0 replies; 4+ messages in thread
From: Fazlul Shahriar @ 2021-02-23 22:23 UTC (permalink / raw)
To: 9fans
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The Go net package uses /net/cs and /net/dns. I see sshnet doesn't create
/net/dns. That could be the issue.
fhs
On Tue, Feb 23, 2021 at 4:35 PM Steve Simon <steve@quintile.net> wrote:
> hi,
>
> the senerio - i have a plan9 terminal, a mac laptop. the laptop connects
> to a vpn.
>
> i write in go, and thus far i use sshfs to mount the mac’s filesystem and
> edit my code. i build and run the code on the mac.
>
> i thought i could use git9 via sshnet to work natively on plan9
>
> most of this is fine but when go tries to access mod files for packages on
> the vpn i get a “no sutiable address found” error for proxy.golang.org.
>
> i can resce the address i need (over the vpn) using ndb/dnsquery however.
>
> if i try and build without my sshnet vpn connection then i get a different
> error which refers to a repository on the vpn.
>
> so. i think the native resolver in the go libraries (and thus in the go
> executable) do not play nicely with sshnet.
>
> my guess (only a guess) is go is trying to do its own name resolution
> using udp port 53 and sshnet does not support udp.
>
> anyone any ideas?
> can i convince go to use plan9’s own name resolution?
> can ssh (and thus sshnet) forward udp or is that not possible?
>
> thanks for any ideas
>
> -Steve
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [9fans] sshnet and the go dns resolver
2021-02-23 21:34 [9fans] sshnet and the go dns resolver Steve Simon
2021-02-23 22:23 ` Fazlul Shahriar
@ 2021-02-23 23:23 ` Jeff Sickel
2021-02-24 1:05 ` Steve Simon
1 sibling, 1 reply; 4+ messages in thread
From: Jeff Sickel @ 2021-02-23 23:23 UTC (permalink / raw)
To: 9fans
I’ve noticed similar problems with go programs and resolving a lookup.
There are go programs that explicitly look for “/etc/resolv.conf” to
grab the nameserver to use, though it would be nice if the developer
were using the default net package for lookups.
> On Feb 23, 2021, at 3:34 PM, Steve Simon <steve@quintile.net> wrote:
>
> hi,
>
> the senerio - i have a plan9 terminal, a mac laptop. the laptop connects to a vpn.
>
> i write in go, and thus far i use sshfs to mount the mac’s filesystem and edit my code. i build and run the code on the mac.
>
> i thought i could use git9 via sshnet to work natively on plan9
>
> most of this is fine but when go tries to access mod files for packages on the vpn i get a “no sutiable address found” error for proxy.golang.org.
>
> i can resce the address i need (over the vpn) using ndb/dnsquery however.
>
> if i try and build without my sshnet vpn connection then i get a different error which refers to a repository on the vpn.
>
> so. i think the native resolver in the go libraries (and thus in the go executable) do not play nicely with sshnet.
>
> my guess (only a guess) is go is trying to do its own name resolution using udp port 53 and sshnet does not support udp.
>
> anyone any ideas?
> can i convince go to use plan9’s own name resolution?
> can ssh (and thus sshnet) forward udp or is that not possible?
>
> thanks for any ideas
>
> -Steve
>
------------------------------------------
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2021-02-23 21:34 [9fans] sshnet and the go dns resolver Steve Simon
2021-02-23 22:23 ` Fazlul Shahriar
2021-02-23 23:23 ` Jeff Sickel
2021-02-24 1:05 ` Steve Simon
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